KARALIT has pioneered a breakthrough called Direct CFD, where CAD models go directly to CFD without time-consuming meshing or tedious manual set-up. The simple process streamlines CAD-to-CFD for experts and non-specialists alike. The KARALIT revolution is based on four innovations:

A unique, proprietary implementation of immersed boundary (IB) technology that enables geometry to be immersed into Cartesian grids, eliminating meshing, maintaining the integrity of cells, and speeding CAD-to-CFD iterations throughout the design cycle.

The use of pre-designed apps that automate, simplify and speed set-up for industry-specific simulations.

A flexible pricing structure that enables users to take full advantage of the latest hardware advances at no extra software cost.

A personal, one-to-one, responsive technical support, bringing the benefits and experience of complex engineering problem-solving across a broad range of industrial sectors - no call centers!

What's New in KARALIT CFD v.4.0 For users- Time dependent Boundary Conditions: allow to set a variation function (ramp, step, exponential and sine) to boundary condition variables.- Standard K-epsilon turbulence model.- New licensing option to offer higher value for money to the users, tayloring the KARALIT CFD to the needs of the customers with product version specific for industrial sectors (automotive, architecture engineering and construction, oil and gas, etc.).

Under-the-hood improvements- Speed-up of cell distance calculation.- New feature of smoothing (allows for a more gradual transition from the tiniest cells' dimension to the typical size of the background mesh) and mesh sealing in the gridgen (the grid is prevented from entering small gaps in the STL surface that are at sub-grid scale).- STL triangulation filter (hole filling) for healing STL surfaces: holes with size smaller than a specified quantity are sealed.

SURFACES AND VOLUMES - The problem's geometrical definition is provided through SURFACES in form of .STL (StereoLithography) files. Tools are provided to EDIT, DIVIDE and/or SELECT part of surfaces in order, for example, to enforce BCs.

- VOLUMES can be created or imported into the computational domain (as STL files) in order to impose over them some physical property (i.e. source or sink of momentum or energy, porosity, etc.)

LOCAL GRID REFINEMENT (LGR)It allows users to generate Cartesian anisotropic meshes with assigned target grid size in normal and tangential to the wall directions. Users can also define how many times the finest mesh layer has to be replicated while moving out of the wall and how many transitional layers have to be used before reaching the grid's base line dimension. An arbitrary number of box or sphere refinement windows can be assigned, as well as symmetry or periodic conditions.

* 2 GHz CPU speed or higher. For superior performance, KARALIT recommends an Intel Xeon®, or AMD Opteron™ processor, and 24 GB RAM or higher. ** KARALIT recommends settings that allow your operating system to manage virtual memory, as needed. There should always be at least as much free hard disk space as system memory (RAM).

KARALIT provides two Apps for aerospace external aerodynamic simulations: "External Flow" and "Wind Tunnel". Both customized Apps walk the user through the necessary inputs to set up boundary conditions, flow regime and other parameters. Within minutes, even CFD novices can begin running high-quality simulations.Sector: Aerospace

Wind Tunnel App

KARALIT has developed a "Wind Tunnel" App, to help deisgners and CFD analysts during the aerodynamic study of the car. The App can be used for studies of factors such as airflow around car bodies, pressure distribution, turbulence and drag. Users simply enter the parameters for key factors and the app takes over, setting up the boundary conditions for a highly accurate simulation.Sector: AutomotiveWatch App Demo

Building Flow App - Environmental Terrain Flow App

The "Building Flow" App can be used for build environment applications such as pedestrian comfort outside of buildings and on walkways, smoke dispersal and fire safety: it can also be used for energy efficiency inside building walls and antennas. Another app, named "Environmental Terrain Flow" App, has been designed to perform a wind site assessment study. As for all KARALIT Apps, setting up the simulation involves only a few minutes of user time to input parameters.Sector: Build Environment/AEC, EnergyWatch App Demo

Internal Flow App

KARALIT’s "Internal Flow" App drastically simplifies the setup of complex geometries from automotive, aerospace, Oil&Gas, medical and other sectors. Users work directly on their CAD geometry and, through the App, enter a few key inputs – such as the boundary conditions, fluid properties and flow regime, going from CAD to simulation in a few minutes.Sectors: Automotive, Aerospace, Oil&Gas, Medical

High lift wings, like the NASA Trapped Wing presented here, are typically used by modern jets in military and commercial applications. See how KARALIT’s mesh-free, app-driven approach takes you from CAD to CFD simulation in just minutes.

This simulation is used to investigate body aerodynamics based on a Daimler Benz research model. Preprocessing takes only seconds and the KARALIT app enables design engineers to set up calculations in a few minutes.

When designing a new park, a subway station or other public structures, architects need to go beyond aesthetics to ensure pedestian comfort and safety. Using the power of the Immersed Boundary (IB) method, the urban environment model geometry (STL format) is directly immersed into a background Cartesian grid. Preprocessing takes just seconds, as the user does not have to deal with time-consuming mesh generation!

KARALIT CFD is not just an efficient tool to allow architects or civil engineers to easily understand the 3D flow around buildings for predicting comfort indices or pressure distribution on building facades, but it can also be efficiently used to predict 3D airflow and all Heating, Ventilating and Air Conditioning (HVAC) systems in indoor environments.

Valves are used in a variety of engineering disciplines, including aerospace, automotive, oil & gas, transportation, medical and other applications. See how easy it is to set up KARALIT simulations for key performance parameters such as critical valve flow characteristics and the induced torque on the disc.

KARALIT has developed a "Wind Tunnel" App, that can be used for studies of factors such as airflow around car bodies, pressure distribution, turbulence and drag. Users simply enter the parameters for key factors and the app takes over, setting up the boundary conditions for a highly accurate simulation.

The "Building Flow" App can be used for build environment applications such as pedestrian comfort outside of buildings and on walkways, smoke dispersal and fire safety: it can also be used for energy efficiency inside building walls and antennas. As for all KARALIT Apps, setting up the simulation involves only a few minutes of user time to input parameters.

KARALIT’s "Internal Flow" App drastically simplifies the setup of complex geometries from automotive, aerospace, Oil&Gas, medical and other sectors. Users work directly on their CAD geometry and, through the App, enter a few key inputs – such as the boundary conditions, fluid properties and flow regime, going from CAD to simulation in a few minutes.

KARALIT'S immersed mesh technique is used to predict the correct distribution and trends of streamlines and velocity fields for the Ahmed Body, a simplified car model for the configuration with 25-degrees slant.

KARALIT'S immersed mesh technique is used to predict the correct distribution and trends of streamlines and velocity fields for the Ahmed Body, a simplified car model for the configuration with 35-degrees slant.